724658 has 8 divisors (see below), whose sum is σ = 1185840. Its totient is φ = 329380.

The previous prime is 724651. The next prime is 724721. The reversal of 724658 is 856427.

724658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 724658.

It is not an unprimeable number, because it can be changed into a prime (724651) by changing a digit.

724658 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16448 + ... + 16491.

It is an arithmetic number, because the mean of its divisors is an integer number (148230).

2⁷²⁴⁶⁵⁸ is an apocalyptic number.

724658 is a deficient number, since it is larger than the sum of its proper divisors (461182).

724658 is a wasteful number, since it uses less digits than its factorization.

724658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32952.

The product of its digits is 13440, while the sum is 32.

The square root of 724658 is about 851.2684652916. The cubic root of 724658 is about 89.8209609421.

Subtracting 724658 from its reverse (856427), we obtain a square (131769 = 363²).

The spelling of 724658 in words is "seven hundred twenty-four thousand, six hundred fifty-eight".